hook-development

You can create Codex plugin hooks by providing a command specifying the event type, prompt, and timeout, such as generating a PreToolUse hook with a validation prompt to check file write operations before execution.

A PreToolUse hook is an event-driven automation script that intercepts tool use events in Codex, leveraging LLM-driven decision making to validate actions like file writes based on context-aware prompts before they execute.

Yes, implementing Codex hooks requires understanding the Codex hooks API and scripting skills to define JSON inputs, bash command hooks, and prompt-based validation for event-driven operations.

Yes, Codex hooks support command hooks that execute bash commands for deterministic checks and integrations, complementing prompt-based validation by providing exact, non-LLM-driven automation responses.

A SessionStart hook loads project context by executing event-driven scripts triggered during session initialization, automatically injecting necessary environmental data and configuration into the Codex workflow.

Prompt-based validation in Codex hooks depends on LLM-driven decision making which introduces non-deterministic outcomes and requires timeout configurations, meaning it may not suit deterministic checks where exact bash commands are necessary.